Applications Guide Tracer Graphical Programming - Trane

®
Determining a programming approach
Determining a programming approach
As mentioned previously, programming instructions in this chapter are in
a modular form. Also, remember that this sequence of operation could
result in a large number of variations in program content and programming
technique.
From the sequence of operation, determine the basic control functions
required. In this case, the following control functions must be addressed.
• Effective space setpoint calculation
• Discharge air setpoint validation
• Mode determination
• Supply fan control
• Duct static pressure control
• Exhaust fan control
• Mixed air/outdoor air damper control
• Cooling valve control
• Heating valve control
• Alarm management
Not every control function fits into one program. Determine the number
of programs required by grouping control functions together that require
the same information, and/or the same run frequency as shown in
Table 15.
Table 15: Control functions within each program
Program name
FanControl
DischargeAirControl
Alarms
ModeAndSetpoints
Control functions
Supply fan control
Duct static pressure control
Exhaust fan control
Mixed air/outdoor air damper control
Cooling valve control
Heating valve control
Alarm management
Effective space setpoint calculation
Discharge air setpoint validation
Mode determination
CNT-APG001-EN 113